Music-sheet changer for mechanical musical instruments.



A. ZOLLINGER.

MUSIC SHEET CHANGER FOR MECHANICAL MUSICAL INSTRUMENTS.

APPLICATION men APR. II. 1914.

1,21 1,029, Patented Jan. 2, 1917.

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A. ZOLLINGER.

MUSIC SHEET CHANGER FOR MECHANICAL MUSICAL INSTRUMENTS.

APPLICATION FILED APR. 11. 1914.

1,21 1,029, Patented Jan. 2, 1917.

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Wmsses. [IZWYZ/Wf 1041a: ZOZU/YGf/P ynl' mils nun 0a., mom umo mwuvuwm or A. ZOLLINGER.

MUSIC SHEET CHANGER FOR MECHANICAL MUSICAL INSTRUMENTS.

APPUCATION FILED APR.11.19\4.

1,21 1,029. Patented Jan. 2, 1917.

5 SHEETS-SHEET 3.

A. ZOLLINGER.

MUSIC SHEET CHANGER FOR MECHANICAL MUSICAL INSTRUMENTS.

APPLICATION FILED APR. 11. 1914.

1,21 1,029. Patented Jan. 2, 1917.

5 SHEETS-SHEET 4.

A. ZOLLINGER.

MUSIC SHEET CHANGER FOR MECHANIC/H; MUSICAL INSTRUMENTS.

APPLICATION FILED APR. 1|. 19x4.

1,21 1 ,029. Patented Jan. 2, 1917.

5 SHEETS-SHEET 5- m: mun urns 00., mom-mum. WASHINUIUN u c UNITED STATESPATENT OFFICE ADALBERT ZOLLINGER, OF LEIPZIG-EUTRITZSCH, GERMANY,ASSIGNOR TO THE FIRM OF POPPER & 00., GESELLSCHAFT MIT BESCHRANKTERHAFTUNG, 0F LEIPZIG,

GERMANY.

MUSIC-SHEET CHANGER FOR MECHANICAL MUSICAL INSTRUMENTS.

Application filed April 11, 1914.

To all whom it 11mg concern:

Be it known that I, ADALBERT ZOLLINGER, a subject of the Grand Duke ofBaden, residing at Leipzig-Eutritzsch, in Germany, have invented certainnew and useful Improvements in Music-Sheet Changers for MechanicalMusical Instruments, of which the following is a specification.

The object of this invention is to provide improved apparatus forautomatically changing music-sheets in mechanical musical instruments,for example in mechanical instruments actuated by coin freed motors.

The invention is illustrated in the accompanying drawings, in whichFigure 1 is a sectional elevation of the music sheet magazine togetherwith means for moving the same- Fig. 2 is a front View of the sameparts. Fig. 3 is an elevation of an automatic indicator. Fig. 4 is ahorizontal cross section of the magazine. Fig. 5 is a side view of theprincipal parts of the sheet changing mechanism, and Figs. 6 and 7 are afront view and plan view respectively of this part of the instrument.Fig. 8 shows part of the sheet feed mechanism. Fig. 9 is a diagram ofthe whole ap paratus.

In the drawings, 1 designates the take-up roller, and 2 the trackerboard. The music sheets to be used are wound upon reels 6, and each ofthem has at its front or outer end a rod 10 adapted to engage with theflanges of the roller 1, these flanges being notched for that purpose.The rods 10 are normally engaged with notches 35 of the magazine 31. Thereels 6 are mounted one above the other in the magazine 31, the frame orholder 32 of which is vertically movable between guides 32 arranged infront of the instrument. The magazine 31 can be taken out of the frame32, in order that a fresh magazine may be inserted, and the reels 6 arealso separately removable, so that they may be changed. The magazine,with its frame or holder 32, is drawn upward by means which will bedescribed hereinafter, and descends by gravity, for which purpose it maybe released by hand or by means of an automatic device.

For starting the instrument a coin chute 62, (Fig. 9) is provided,through which a coin. can be dropped on to a lever 63, to tem-Specification of Letters Patent.

Patented Jan. 2, 1917.

Serial No. 831,105.

porarily close an electric contact 64. The latter closes an electriccircuit including an electromagnet (35, which attracts an armature 66and thus releases a lever 67, the movement of which closes an electriccontact (58 in the circuit of an electric motor 69. The latter actuatesthe pneumatic apparatus, together with means for moving the magazine'andfeeding the sheets. The movement of the lever 67 also causes a rod 70 toopen a valve 71., enabling air to flow through a pipe 72 into thechamber I of the pneumatic control apparatus or windchest 73, which isof a known type. This produces suction in a pipe 74 having brancheswhich lead to pneumatics 33 and Figs. 5 and 9), which are accordinglycontracted. The pneumatic 33 acts through a. steel band on a pulley 34,to the shaft of which is fixed a cam 40. Against the latter rests aclutch lever 37 controlling a clutch 78. For clearness this lever,together with the clutch 78 and the shaft 38 carrying the clutch, areshown in Fig. 9, to the right of. the part shown in Fig. 5, with theaxis of the shaft 38 in the plane of the figure, whereas actually theshaft 38 is perpendicular to that plane. A flat part of the cam allowsthe lever 37 to be moved by a spring 77, so that the clutch 78 engages atoothed wheel 79 loose on the shaft 38. The wheel 79 is engaged with atoothed wheel 80 fixed to the take up roller 1, and rotates the latter.To the shaft carrying the pulley 34: are fixed hooked arms 11, whichengage the rod 10 of the music sheet to be played, this rod lying intheir path in two of the notches 35 of the magazine. The said armstransfer the said rod to the roller 1, which draws the sheet across thetracker board 2.

The pneumatic 7 5 already mentioned acts by means of a rod 76 on a valve82, which it rocks, the housing of this valve being hinged, andconnected by a flexible union to a pipe 81. An arm 83 fixed to the valve82 is placed in the path of a tappet 84 on the wheel 80, so that therotation of the latter opens the valve. This causes air to enter thechamber II of the wind-chest 73, and suction is produced in a pipe 85,whereby a pneumatic 86 is caused to collapse. This pneumatic actsthrough a rod 87 on the rod 70, and closes the valve 71 again. with theresult that the pneumatic eXpands and the valve 82 is restored by aspring to its normal position.

ll hen the first piece of music on the sheet has been played a hole inthe tracker board admits air to a pipe 83 leading to the chamber TIT. ofthe wind-chest 73, and sum tion is produced in a, pipe 89, whereby apneumatic contracted, and lifts, by means of a rod 91, the lever 67, sothat the motor circuit is broken and the take up roller stops. At thesame time a pneumatic :35 is contracted and moves the pointer 51 of anindi ator. The latter has an index sheet 61, which moves with themagazine and on which the numbers of the pieces of music are marked. 11rod 57 connected to a spring 58 acts on the pointer, and tends to holdthe same opposite the numeral 1 marked on the index sheet in the sectionappertaining to the music sheet in use. When the piece 1 has been playedthe pneumatic depresses a pawl 59, and moves the pointer down vard onedivision, return of the pointer being prevented by a pawl 60. Thismovement of the pointer is repeated after the playing of each piece onthe music sheet.

hen the last piece of music on the music sheet has been played a hole inthe sheet admits air to a pipe 92 leading to the chamber TV 016' thewind chest 73. This produces suction in a pipe 93, and collapse of apneumatic 91, which moves a valve slide 95 so that the latter places aduct 96 connected to a branch of the pipe 93 in communication with aduct 97 connected to a pipe 98. The latter leads to the pneumatic 86already referred to, so that this pneumatic is caused to collapse andengage the clutch 78 with a toothed wheel 99 which is loose on the shaft38 and meshes with a toothed wheel 100 fixed to a sprocket wheel 101.The latter drives, by means of a chain 102, a sprocket wheel 103 fixedto a friction wheel 39. The axle to which the wheels 103 and 39 arefixed is mounted on a bar 104, which is horizontally movable, by meansof a lever 106 and a. pneumatic 107 connected to the pipe 93. Thispneumatic shifts the bar so that the friction wheel 39 is brought intocontact with a, friction wheel fixed to the reel ofi which the musicsheet has been wound, so that this reel is revolved for winding thesheet up again. The pipe 98 is also connected to a pneumatic 56, whichcollapses and acts through a rod 108 on a lever 109, so that a doublearm 110 actuated by the lever pushes the two pawls 59 and 60 apart, andenables the pointer 54 to be restored to its normal position by thespring 58.

The rod 10 of the sheet being wound up on its reel the arms 11, whichguide it back to-its notch 35 and then drop into their normal position.In doing so,

one of these arms pushes a rod 111 and slightly rotates a lever 112, anarm 113 of which opens a valve 114 and, admits air to a pipe 115 leadingto the chamber V of the wind-chest 73. This produces suction in a pipe116 and causes a pneumatic 117 to collapse, so that the valve slide 95is moved and breaks communication between the ducts 9i; and 9?. Thesuction in the pipe 98 thus discontinued, and the pneumatic 36 isexpanded by the spring 77, whereby the lever 3'7 is rocked anddisengages the clutch from the wheel 99, so that the drive of thefriction wheel 39 is discontinued. At the same time the bar 10%. isshifted by the lever 106 so that the friction wheel 39 is removed fromthe wheel 105. The valve 1% is only opened for a very short time, byreason of the "fact that the pipe 116 is connected to a pneumatic 118,which is caused to col lapse and by means 01 a rod 119 restores the arm113 to its normal position. A. pipe 120 branched oil the pipe 116 leadsto a pneumatic 121, which also collapses when the valve 1H is opened andacts through a rod 122 on the lever 67, whereby the circuit of the motor69 is broken.

The magazine holder 32, which is at the start in its highest position,is held in that position by a pawl a2. lVhen the arms 11, rocking backto their normal position, rotate'the cam -10, a tappet 4.1 on the latteractuates a lever -12, which disengages the pawl 42 from the magazineholder 32, so

that the latter can descend by gravity. By the time that the rod 10 ofthe next music sheet is in the path of the arms 11 the tappet 11releases lever 12 again, and the pawl 1-2 is reengaged with the magazineholder.

When all the music sheets have been played and the magazine holder hasreached its lowest position, a tappet 1 1 on the holder closes a switch13, and thereby closes the circuit of an electromagnet 15, which by att"acting its armature allows an automatic switch 16 to close the motorcircuit and open a. valve 17. The latter admits air to a pipe 123leading to the chamber VI of the windchest 73, whereby suction isproduced in a pipe 124-, causing a pneumatic 8 to collapse and actuate alever 49. The latter engages a clutch 50, which connects a shaft 125driven by the motor to a shaft 126, on which is a worm 127 driving aworm wheel 51 fixed to a shaft 52. The latter rotates a winch 128, sothat a cord 129 pulls the magazine holder upward. When the magazineholder has reached its highest position an abutment thereon opens avalve 53, which admits air to a pipe 131 leading to the chamber VII ofthe wind-chest, whereby suction is produced in a pipe 132 and causes apneumatic 133 to collapse, which opens the switch 46, so that the motorstops. At the same time the pneumatic 133 closes the valve 47, so thatthe pneumatic 48 expands and allows the clutch 50 to be disengaged by aspring. The switch 43 and valve 58 can also be actuated by hand, so thatany desired movement of the magazine holder can be caused to take place.

\Vhat I claim as my invention and desire to secure by Letters Patent ofthe United States is 1. In apparatus for the purpose set forth, thecombination of a music sheet magazine, a guide for said magazine whereinthe latter is adapted to travel in one direction by gravity, and motormechanism for moving the magazine in the opposite direction in saidguide.

2 In apparatus for the purpose set forth,

the combination of a music sheet magazine, a

guide for said magazine wherein the latter is adapted to travel in onedirection by gravity, and motor mechanism for moving the magazine in theopposite direction in said guide, said motor mechanism including anelectric motor, an electric contact device, a motor pneumatic and aclutch controlled by said pneumatic.

In apparatus for the purpose set forth, the combination of a music sheetmagazine, a guide for said magazine wherein the same is adapted totravel in one direction by gravity, motor mechanism for moving saidmagazine in the opposite direction in said guide, means for retainingsaid magazine in elevated positions in said guide, a take-up roller,means for transferring sheets from said magazine to said roller, meansfor wind ing sheets off said roller and returning same to said magazine,and means whereby on completion of the return of a sheet to saidmagazine said retaining means are disengaged.

at. In apparatus for the purpose set forth the combination of a musicsheet magazine, a guide for said magazine wherein the latter is adaptedto travel in one direction by gravity, motor mechanism for moving themagazine in the opposite direction in said guide, a take-up roller, atracker board, means for transferring sheets from said magazine acrosssaid tracker board to said take-up roller, an index sheet holder, amovable pointer adjacent said index sheet holder, and pneumaticallyactuated mechanism associated with said tracker board for moving saidpointer.

In witness whereof I have signed this specification in the presence oftwo witnes%s.

ADALBERT ZOLLINGER. Vitnesses RUDOLPH FRIOKE, J OXIS KRAHL.

Copies of this patent may he obtained for five cents each, by addressingthe Commissioner of Patents. Washington, D. 0.

